Where is insulin produced in the human body?

Insulin is produced in the pancreas, which is a vital organ located behind the stomach. Specifically, insulin is synthesized and secreted by the beta cells found in the islets of Langerhans within the pancreas. This hormone plays a critical role in regulating blood glucose levels by facilitating the uptake of glucose into cells for energy production and helping to store excess glucose as glycogen in the liver.

The other options, while important organs in metabolic functions, do not produce insulin. The liver is primarily involved in glucose metabolism and storage, the kidneys have a role in filtering blood and regulating electrolytes, and the intestines are primarily responsible for digestion and nutrient absorption. Understanding the specific function of the pancreas in insulin production is essential for recognizing its importance in metabolic health and diabetes management.